1.éå度ãéå度æ¯é½¿è½®å·¥ä½è´¨ééè¦åæ°ä¹ä¸ï¼èºæè§è¿å°ï¼æä¹ä¸å¤§ï¼ä¸è½ä½ç°
æ齿轮çä¼ç¹ãä¸è¬çèºæè§åºå¤§äº15°ã
2.è½´ååãèºæè§è¿å¤§ï¼å¤§äº35°ï¼ï¼è½´ååå¢å å¾å¤§ï¼å¯¹è½´ãè½´æ¿äº§çä¸å©å½±åï¼éä½é½¿è½®ä¼ å¨æçã